Use evidence from the fact that an amphibian is cold-blooded to answer the following question. Choose from options. "Which can best be described as hibernation for most amphibians?"

Available choices: + a brain dead frog in mud. + a frog napping for an hour in mud. + a frog burying itself in mud for months. + a frog sleeping for the night in mud.
a frog burying itself in mud for months